LC7421-E2 25.4 mm Dia. ZnSe Plano-Concave Lens; EFL=-75mm 4.5-7.5µm

The LC7421-E2 is a 25.4 mm diameter Plano-Concave Spherical Lens, designed for use in the infrared spectrum with a center wavelength of 10600 nm. This lens is sourced from Thorlabs, a leading global manufacturer of photonics components.

The lens is crafted from ZnSe (Zinc Selenide), a material known for its excellent transmission properties in the infrared region. The lens features a plano-concave geometry, with a concave surface radius of -105.2 mm, and a center thickness of 2 mm. The effective focal length (EFL) of this lens is -75 mm, making it suitable for use in a variety of optical systems where a negative focal length is required.

The lens is coated with Thorlabs' E2 AR coating, designed for use in the 4.5-7.5 µm range. This coating helps to reduce surface reflections, thereby improving the overall transmission of the lens. The coating is applied to both the front and back surfaces of the lens.

The LC7421-E2 is currently in stock, according to the vendor's website. For more detailed information, including technical drawings and performance data, please refer to the vendor's product page.